Sofa-bed



A. J. KATZ Nov. 1, 1966 SOFA-BED 5 Sheets-Sheet l Filed March 18, 1955 sMQ @N mw INVENTOR. AMEX J- /114 7'2' A. J. KATZ Nov. 1, 1966 SOFA-BED 5Sheets-Sheet 2 Filed March 18, 1965 A. J. KATZ Nov. l, 1966 SOFA-BED 5Sheets-Sheet I5 Filed March 18, 1965 A. J. KATZ Nov. 1, 1966 SOFA-BED 5Sheets-Sheet 4 Filed March 18, 1965 r um f mK m m/.w m wx N 1E L A A. J.KATZ Nov.. 196.6

S OFA-BED 5 Sheets-Sheet 5 Filed March 18, 1965 4. .uw mm; @www3,281,871 @GFA-BED Alex JI. Katz, West Grange, NJ.

Spring Corp., Foot of E. 46th St., Bayonne, Nal.) Filed Mar. 18, 1965,Ser. No. 449,845

(% Super Sagless 14 Claims. (Cl. :3l-13) This invention relates tosofa-beds in which the bed comprises a plurality of collapsible pull-outsections. It is particularly directed to a clam shell type ofcollapsible bed on which people sleep parallel to the sofa. This type ofbed comprises three interpivoted bed sections.

An object of this invention is to provide a sofa-bed of the characterdescribed which in closed, collapsed or sitting position has no linkagesticking up above the bed deck (the top of the front bed Section in thefully collapsed position of the bed), the construction being such,furthermore, that the sofa can employ a loose pillow back or comprise acompletely open back, or a conventional fitted back.

Another object of this invention is to provide a bed of the characterdescribed having a motion which enables it to clear a front board of thesofa frame, and at the same time to clear a conventional padded back ofthe sofa frame; and in which the bed has a conventional sleeping heightwhen opened; the construction being such that the bed moves upconsiderably from a low collapsed position to obtain proper height, andyet moves out sufficiently to give the bed proper width.

A further object of this invention is to provide in a bed of thecharacter described, mechanism including a rear throw-out link and arear booster spring, which in the collapsed position of the bed istensioned and is attempting to rotate the throw-out link away from co1-lapsed position to facilitate the initiation of the pull-out cycle, saidbooster spring further acting to close the bed, after the bed clears thefront foot board, thereby tending to lift the bed and hence preventingit from banging down on the floor; this booster spring, in the openposition of the bed, also being helpful to start the closing of the bed,thereby to make the bed easier to close.

Another object of this invention is to provide a strong, durable andcompact sofa-bed of the character described, which shall be relativelyinexpensive to manufacture, easy to manipulate, comfortable to use, andwhich shall yet be practical and efficient to a high degree.

Other objects of this invention will in part be obvious and in parthereinafter pointed out.

The invention accordingly consists in the features of construction,combination of elements, and arrangement of parts, which will beexemplied in the construction hereinafter described, and of whi-ch thescope of invention will be indicated in the following claims.

In the accompanying drawings in which is shown an illustrativeembodiment of the invention,

FIG. 1 is a side elevational view of a sofa-bed embodying the invention,in fully collapsed condition;

FIG. 2 is a view similar to FIG. 1, but showing the bed partially openup and showing the front legs just clearing the front board of the sofaframe;

FIG, 3 is a view similar to FIG. 1 but showing the bed with the frontsection over the rear section.

FIG. 4 is a partial side elevational view showing the bed fully openedup and extended; and

FIG. 5 is a partial top plan view of the bed in opened up condition,showing one side only.

Referring now in detail to the drawing, 1d designates a sofa bedembodying the invention. The same comprises a sofa frame 11 having sidewalls 12 having lower edges 12a and upper edges 12b, front legs 13, rearlegs 14, side arms 15, a back 16 and a front board 17 having an upperedge 18 disposed at a level well below the top Patented Nov. l, 1966 ofthe side arms 15. The side arms are interconnected by the back 16, thefront board 17 and by a crossrail 19 disposed forwardly of the back andabove the upper edge 18 of the front board, and defining the space forthe conventional pillow back for the sofa frame. The sofa frame may beof usual, conventional construction.

Fixed to the inner sides of each side arm 15 is a chassis plate 20extending horizontally and disposed in a vertical plane above the loweredges 12a of the side walls 12. The drawings show the bed mechanism onone side of the sofa, it being understood that the mechanism on theother side is similar and symmetrically disposed. Said plates Ztl extend4to the inside of the front board 17 and are interconnected by a frontangle iron 21 riveted as at 21a to front flange extensions 20a of saidplates. The rear ends of plates 20 are located forwardly of the back 16of the sofa-frame. Fixed to said plates 20, adjacent the rear endsthereof, as by rivets 25, are off-set upstanding chassis bars 26projecting up above the upper edges 12b of said side Walls 12. Connectedto said chassis plates 20 and chassis bars 26, is a collapsible bed B,as will be explained hereinafter.

Pivoted as at 27, to the upper ends of chassis bars 26 are rearthrow-out links 30 which, in the extended position of the bed B, as willbe explained hereinafter, are inclined forwardly and upwardly as shownin FIG. 4 of the drawing.

Throw-out links 30 are almost diamond shaped, having an apex 27a atpivot pin 27, from which extend edges 30a, 30]). Extending from edge 30ais an edge 30C substantially parallel to edge 30h and forming an obtuseangle with edge 30a. Extending from edge 30h is an edge 30d forming anobtuse angle with edge 30h and an acute angle with edge Stic and formingan apex 30e opposite apex 27a.

Pivoted to each chassis plate 20, as by pivot 32 located rearwardly offront bio-ard 17, is a main lever 35 having one short arm 36 curveddownwardly 'and rearwardly in the position of FIG. 4, and a secondIlong, straight arm 37 'inclined rearwardly and upwardly in saidposition of FIG, 4. In the fully extended position lof the bed, as'shown in FIG. 4, the upper end of .arm 37 is located somewlhat in frontof and somewhat below the apex 30e of throw-out link 30. Pivoted to saidupper end of arm 37, as at 38, is Ia first control link 39 inclineddownwardly 'and rearwardly and connected by pivot 40 to throw-out link30 near the junction of edges 30a, 39C thereof. The throw-out links Slion both sides of the bed B are interconnected by a transverse tubulartie rod 42 having ilattened end portions 44 extending through slots 45in said links and riveted at their outer ends.

Arm 36 of main lever 35 projects down below edge 12a, in the fullyextended position of FIG. 4. Att-ached to the inside of each dhasssplate 20, near the rear end thereof, is a bracket 47 having an offsetflange 47a formed with an opening through which extends the threadedshank 48 of a hook screw 49. A nut 50 screwed on said shank 4S, abutsilange 47a. The horok of said screw 49 is connected `by a coil tensionspring 51 to t'he lower 'end of arm 36 of the main link 35. Thus,springs 51 tend to rotate the main levers 35 in 1a clockwise direction,looking at FIG. 4, hence tending to rotate the throw-out links 3l! in -aclockwise direction about pivot 27.

Pivoted to 'each throw-out link 3tlg as by pivot 53 located near edge36e :and between pivot 40 and apex 30e, is a second control llink 54. Inthe fully extended 'position of FIG. 4, link 54 has an arm 54a extendingup from pivot 53, from which arm extends yforwardly an arm 54h. Pivotedto the forward end of each arm 5411, as at 55, is a bell crank lever 56.Said lever 56 has an arm 57 projecting rearwardly in the FIG. 4position, yand an arm 58 projecting downwardly. Said lever 56 is pivotedlas at 59, at the junction of said arms 57, 58, to a side member 60 ofla rear bed section 61 of bed B. The side members 60 are interconnectedby an end member 62. Said members 60, 62 are angle irons. A gusset plate62a may be provided to strengthen the corner of members 60, 62. Endmember 62 is located forwardly of pivots 53 and just thereabrove in thefully extended position of the bed B.

Pivoted to the front ends of rear bed section 61 is an intermediate bedsection 64 comprising side angle iron members 65 having vertical angespivoted at the rear ends as at 66, to the forward ends of the verticalanges of side members 60 of the rear bed section 61. Side members 65 areinterconnected by transverse tie rods 68, 69. Pivoted to the tfront endsof intermediate bed section 64 is a front bed section 70. Said bedsection 70 comprises side member angle irons 71 having vertical flangespivoted at their rear ends, as by pivot pins 72, to the front ends ofthe vertical ilanges of side members 65.

The-front ends of lside members 71 are interconnected by a transversefront member 73. The lengths of Afront and rear bed sections 70, 61 areabout the same and are each considerably longer than th'e intermediatebed section 64.

Pivoted on .the pivot pins 66 are rear legs 75 interconnected yby acnoss tie-rod 76. In the partially opened position of the bed shown inFIG. 3, the legs 75 contact the floor.

The ybed sections 61, 64, 70 supporta mattress platform 77 of usualconstruction comprising wires 78 connected to 'each other and alsoconnected to the bed sections by coil tension springs 79. Said rear legs75 are connected Ato the lower ends of arms 58 of bell crank levers 56,by means of links 80 pivoted to the legs 75 as by pivot pins 81 slightlybelow the upper ends of said legs, and by pivot pins 82 located at thelower ends of said arms 58.

For the punpose hereinafter appearing short third con- .trol links 85are pivoted at their lower ends to pivot pins 38, and at their upperends, as by pivots 86, to intermediate portions of arms 54h of links 54.Pivoted to side memebrs 60- of rear bed section 61, as by pivot pins 90,are slotted bell-crank contnol links or levers 91. FDhe pivots arelocated rearwardly of pivots 59.

Bell-crank levers 91 each have a short arm 92 projecting downwardly, inthe FIG. 4 position of the bed, and said arm is connected by a coiltension booster spring 94, engaging a pin 95 on said arm 92, to la pin96 at the apex 30e of the throw-out link 30.

Each bell-crank lever 91 also lhas a longer .arm 97 projecting upwardlyand rearwardly, in said f'ully extended position of said bed, which armis f-ormed with a straight longitudinal slot 98 in which ris slidablyreceived a guide pin 99 xed to said arm 54b of link 54 and located tothe right of pivot 86.

In the fully extended or open position of the bed, guide pin 99 islocated at the rear lower end of slot 98.

Pivoted to each side member 65 of intermediate section 64, as by pivot100, is a link 101. The vertical flange of each of the side members 60of rear section 61, is formed with a longitudinal slot 102. Each link101 carries a pivot pin 103 passing through slot 102. In the fullyextended position of the bed, pins 103 are at the forward ends of slots102.. Pivoted on each pivot pin 103 is a link 104 inclined downwardlyand rearwardly in the fully extended position of the bed. Each link 104is formed with a longitudinal slot 105 through which the pivot pin 82slidably passes. In said FIG. 4 position of the bed, pivot pin 82 is atthe rear or lower end of slot 105.

Pivoted to each link 101 near pivot pin 100, as by pivlot pin 107, is alink 108 which extends forwardly of pivot 107, las shown in FIG. 4. Theforward end of each llink 108 is pivoted as at 109 to a link 110 whichalso extends forwardly and is pivoted as |at 111 to a vertical flange ofside member 71 of front bed section 70.

Pivoted to each side member 71 of front s'ection 70, as

4 at 115, is a front leg 116 which contacts the tloor when the bed isfully extended. Said leg 116 has a portion 117 projecting above pivot115. Pivoted to said projecting portion 117, as at 118 is Aa link 119which is pivoted as at 120, to link in spaced relation to pivot 111.

P-ivoted to each side member 65 of intermediate section 64, -as at 122,is a link 123 formed at its outer end with a slot 124 slidably receivinga pin 125 on link 110 and located between pivot pins and 109 `but clserto pin 120.

Pivoted to front side members 71 as at 130, is a stabilizingcross-member 132 having side portions 133 extending down from saidpivots and an interconnecting por-tion 134. Pivoted to said side members133 as at 135, are links 136 formed with slots 1.37 slidably receivingpins 138 on links 123.

In the fully extended position of the bed, pins 138 are at the upperends of slots 137 and links 136 are inclined rearwardly and upwardly.

It will be noted that the throw-out link 30, and control links 54, 85and 39 constitute a four bar linkage.

To collapse the bed from the fully extended position of FIG. 4, thefront section 70 is swung up 90 about pivot pins 72 and then the frontand intermediate sections 70 and 64 are swung together for another 90about pivot pins 66 to the position of FIG. 3. Then the bed is firstraised to the position of FIG. 2 and then swung down into the sofa frameto the fully collapsed position of FIG. l. It will be understood thatthis procedure is reversed to open the bed.

The booster spring control links or levers 91 have two functions. In theclosed or fully collapsed position of the bed, the booster springs 94are stretched and tensioned and are urging the rear throw-out links 30away from collapsed position in a counter clockwise direction. This pullis in addition to the pull of the main levers 35 under the influence ofmain springs 51, which also 'tend to rotate the rear throw-out links 30away from collapsed condition, to facilitate movement of the bed fromthe fully collapsed position of FIG. 1 toward the partially opened upposition of FIG. 2.

Also, as the bed clears the front board 17, as shown in FIG. 2, the bedwould have a tendency to drop heavily toward the floor, but the boostersprings 94 then pull the rear throw-out links 30 in an oppositedirection (see FIG. 3), tending then to close the bed and hence tendingto lift the bed and prevent it from banging down heavily on the oor.These booster springs 94 also help start the close of the bed from theposition of FIG. 3 to the position of FIG. 2.

It will be noted that pin 96 passes from one side of an imaginary lineconnecting fixed pin 27 and pin 95 to the other side of said line as thebed moves from the position of FIG. 2 toward the position of FIG. 3.

It will be observed that in the fully closed position of the bed (FIG.l), no part of the linkage projects above the the deck, i.e., the top ofthe front bed section 70 when collapsed.

Furthermore, the mechanism permits the use of a loose pillow back or acompletely open back bed or a conventional fitted back.

The two control levers 39 and 85 serve the function of controlling themotion of the rear throw-out links 30, giving the bed a forwardly andupwardly motion which enables it -to clear a front board, and at thesame time clear a conventional padded sofa back. The bed will move fromthe collapsed position of FIG. l to the position of FIG. 2, by moving upforwardly of cross-rail 19 and over the front board 17. This movement isaccomplished because the rear throw-out links 30 swing forwardly fromthe downwardly and rearwardly inclined position of the fully collapsedbed to clear the padded back and then swing up to move the bed upwardlyto clear the front board.

Further, the bed moves up considerably to get a proper height from a lowcollapsed position and yet moves out sufiiciently to bring the bed out aconsiderable distance in the fully extended position, to permitsutiicient room for comfortable sleeping of two persons in positionsparallel to the sofa frame.

Upon raising the front section 7) of the bed, leg 116 is swung towardsaid front section about pivot 115, due to the push of link M9 actedupon by links L10, 108.

As the fron-t section 70 is swung together with the intermediate section69, to the position of FIG. 3, pin 103 is slid to the left end of slot192. As the bed is moved from the position of FIG. 3 to the position ofFIG. 2, leg 75 is raised and swung by link 80 toward the underside ofthe rear section 61 of the bed. During this movement pin 82 slides downslot 105, bell-crank 56 is rotated to pull on link 54 for rotating therear throw-out links 30 in a clockwise direction. As the bed is movedfrom the position of FIG. 2 to the fully closed position of FIG. l, themain springs l are tensioned by rotation of the main lever 35 in acounterclockwise direction, as the rear throw-out links 3) swingdownwardly and rearwardly, thereby also tensioning the booster springs94.

In the fully extended position of the bed, (FIG. 4), the rear section 61is supported by the main lever 35, the first control lever 39, thethrow-out link 30, and the control link 85 pivoted to the control link54 (which is pivoted to the throw-out link 30), and the bell-crank lever56 which is pivoted to the control link 54 and to the rear bed section6l.

In the fully collapsed position of the bed, lugs 154i fixed to sidemembers 65 of intermeditae bed section 64, rest on angle iron 2l. Alsoarms 57 of bell-cranks 56 project up `and are pivoted to link 54 whichis pivoted to the rear throw-out link 30, which in this positionprojects downwardly and rearwardly. The bed is thus supported in fullycollapsed position. In the collapsed posi- -tion links llt), NS and 101hold the rearwardly extending front section at right angles tointermediate section 64, since pins 103 are at the left ends of slots102.

It will thus be seen that there is provided a combination device inwhich the several objects of the present invention are achieved andwhich is well adapted to meet the conditions of practical use.

As possible embodiments might be made of the above invention, and asvarious changes might be made in the embodiment above set forth, it isto be understood that all matter herein set forth or shown in theaccompanying drawings is to be interpreted as illustrative and not in alimiting sense.

I claim:

t. In an extensible collapsible bed, a chassis, a rear throw-out memberpivoted to said chassis and inclined upwardly and forwardly in theextended condition of the bed, a main lever pivoted to said chassis andhaving an arm projecting downwardly and an arm projecting upwardly andrearwardly in the extended condition of the bed, a main tension springconnecting said downwardly projecting arm with said chassis, a firstcontrol link connecting said upwardly projecting arm with said throw-outmember, a three section collapsible bed comprising a rear bed section,an intermediate bed section pivoted to the front end of said rear bedsection, and a front bed section pivoted to the front end of saidintermediate bed section, said three sections being in alignment, in theextended condition of the bed, a rear leg pivoted to the rear bedsection, a front leg pivoted to said front bed section, a bell crankpivoted to said rear bed section and having a downwardly extending armand a forwardly extending arm, and a second control link connecting saidforwardly extending arm of said bell-crank with said throw-out member,said bed being fully collapsible to a position in which the rear bedsection is down, the intermediate bed section extends up from the frontend of said rear section, and said front section is located above therear section and extends rearwardly from the upper end of saidintermediate section, said rear throw-out link extending downwardly andrearwardly from its pivotal connection to said chassis, in the collapsedcondition of said bed.

2. In an extensible collapsible bed, a chassis, a rear throw-out memberpivoted to said chassis and inclined upwardly and forwardly in theextended condition of the bed, a main lever pivoted to said chassis andhaving an arm projecting downwardly and an arm projecting upwardly andrearwardly, a main tension spring connecting said downwardly projectingarm with said chassis, a first control link connecting said upwardlyprojecting arm with said throw-out member, a rear bed section, anintermediate bed section pivoted to the front end of said rear bedsection, a front bed section pivoted to the front end of saidintermediate bed section, said sections being in alignment, in theextended condition of the bed, a rear leg pivoted to the rear bedsection, a front leg pivoted to said front bed section, a bell-crankpivoted to said rear bed section and having a downwardly extending armand a forwardly extending arm, and a second control link connecting saidforwardly extending arm of said bell-crank with said throw-out member, acontrol lever pivoted vto said rear bed section, and having a downwardlyextending arm, a booster spring connecting said downwardly extending armof said control lever with said throw-out link, and a third control linkconnecting the pivotal connection of said upwardly extending arm of saidmain lever and said first control link, to said second control link.

3. The combination of claim 2, said control lever having a rearwardlyextending arm formed with a longitudinal slot and a pin on said secondcontrol link slidably received in said slot.

4. The combination of claim 3, the pivotal connection of said iirstcontrol link to said throw-out member being located between the pivotalconnection of said second control link with said throw-out member, andthe pivotal connection of said throw-out member to said chassis, thepivotal connection of said second control link with said throw-outmember being disposed between the pivotal connection of said firstcontrol link with said throw-out member and the point of connection ofsaid booster springwith said throw-out member.

5. In combination, a chassis, a bed comprising a rear section, anintermediate section pivoted to the front of said rear section, and afront section pivoted to the front of said intermediate section, a rearthrow-out member pivoted to said chassis, a main lever pivoted to saidchassis, spring means to rotate said main lever in one direction, aiirst control link connecting said main lever with said throw-outmember, a bell crank member pivoted to said rear section, a secondcontrol link pivotally connecting said throw-out member with saidbell-crank member, and booster spring means tending to rotate saidthrow-out member in one direction when said bed sections are extendedand in horizontal alignment, and said throwout member extends forwardly,said sections being fully collapsible to bring said rear section down,said intermediate section at right angles to and extending up from thefront end of said rear section, and said front section to a positionover the rear section and extending rearwardly from the upper end ofsaid intermediate section, with said throw-out link extending rearwardlyand said booster spring means tending to rotate said throw-out member inan opposite direction when said bed sections are in said collapsedcondition.

6. The combination of claim 5, a leg pivoted to the front end of saidrear section, and said booster spring means tending to swing said leg uptoward the underside of said rear section when said throw-out link isinclined upwardly and forwardly.

7. In combination, a chassis, a rear throw-out link pivoted to the rearof the chassis, a main lever pivoted to the front of the chassis, acontrol link connecting the main lever and the throw-out link, firstspring means acting on the main lever tending to swing the throw-outlink forwardly, a three section bed comprising a rear section, anintermediate section pivoted to the rear section, and a front sectionpivoted to the intermediate section, means connecting said throw-outlink and main lever to said rear section, and second spring means otherthan said rst spring means, tending to rotate said throw-out link t0-ward a position where the pivotal connection of said throw-out link tosaid chassis, and the pivotal connections of said control link to saidmain lever and throw-out link, are substantially in alignment.

8. The combination of claim 7, a rear leg pivoted to said rear section,and means controlled by said second spring means, and acting on themeans which connects said rear section to said main lever and throw-outlink, tending to swing said leg toward the undersideof said rearsection.

9. The combination of claim 8, a front leg pivoted to said frontsection, means to permit said bed to be moved from a fully extendedposition with said bed sections in horizontal alignment and with saidlegs contacting the oor, and with said rear throw-out link inclinedforwardly and upwardly, to a fully collapsed position with saidthrow-out link inclined downwardly and rearwardly, with the rear sectionin horizontal position substantially coextensive with said chassis, withthe intermediate section extending up from the front end of said rearsection, and with the front section extending rearwardly from the upperend of said intermediate section.

10. The combination of claim 9, said throw-out link, main lever, saidsecond spring means, and said connecting means being located below thetop of said front section in said fully collapsed position of -the bed.

11. A collapsible bed having an open and closed position, andcomprising, in combination, a chassis, a rear throw-out member pivotallymounted on said chassis, a main lever pivotally mounted on said chassis,resilient means to urge said main lever toward the open position of saidbed, said bed comprising front and rear bed sections pivotally connectedto an intermediate bed section, means to connect said rear bed sectionto said main lever and said rear throw-out member, said connect meansincluding means to support said rear bed section in the opened positionof said bed, and booster spring means, including a coil spring connectedto said rear throw-out member, urging said rear throw-out member towarda position where the pivotal connection of said rear throwout member tosaid chassis is in alignment with the axis of said coil spring.

12. The combination of claim 11, said connect means comprising a iirstcontrol link connecting said main lever to said throw-out member, abell-crank pivoted to said rear bed section, a second control linkconnecting a rst arm of said bell crank to said throw-out member, and athird control link connecting the connecting point of said main leverand iirst control link, to said second control link.

13. The combination of claim 12, the pivotal connection of said firstcontrol link to said throw-out member being located between the pivotalconnection of said second control link with said throw-out member, andthe pivotal connection of said throw-out member to said chassis, thepivotal connection of said second control link with said throw-outmember being disposed between the pivotal connection of said rst controllink with said throw-out member and the point of connection of saidbooster spring with said throw-out member.

14. The combination of claim 12, said booster spring means alsoincluding a two-armed control lever pivoted `to said rear bed section,said coil spring being connected `to one arm of said control lever, theother arm of said control lever being formed with a longitudinal slot,and a pin fixed to said second control link slidably received in saidslot.

References Cited by the Examiner UNITED STATES PATENTS 2,991,484 7/1961Willis 5-55 X 3,150,384 9/1964 Helton 5-13 3,209,377 10/1965 Fox 5--133,209,378 10/1965 Laemmle 5--13 FRANK B. SHERRY, Primary Examiner.

CASMIR A. NUNBERG, Examiner.

1. IN AN EXTENSIBLE COLLAPSIBLE BED, A CHASSIS, A REAR THROW-OUT MEMBERPIVOTED TO SAID CHASSIS AND INCLINED UPWARDLY AND FORWARDLY IN THEEXTENDED CONDITION OF THE BED, A MAIN LEVER PIVOTED TO SAID CHASSIS ANDHAVING AN ARM PROJECITNG DOWNWARDLY AND AN ARM PROJECTING UPWARDLY ANDREARWARDLY IN THE EXTENDED CONDITION OF THE BED, A MAIN TENSION SPRINGCONNECTING SAID DOWNWARDLY PROJECTING ARM WITH SAID CHASSIS, A FIRSTCONTROL LINK CONNECTING SAID UPWARDLY PROJECTING ARM WITH SAID THROW-OUTMEMBER, A THREE SECTION COLLAPSIBLE BED COMPRISING A REAR BED SECTION,AN INTERMEDIATE BED SECTION PIVOTED TO THE FRONT END OF SAID REAR BEDSECTION, AND A FRONT BED SECTION PIVOTED TO THE FRONT END OF SAIDINTERMEDIATE BED SECTION, SAID THREE SECTIONS, BEING IN ALIGNMENT, INTHE EXTENDED CONDITION OF THE BED, A REAR LEG PIVOTED TO THE REAR BEDSECTION, A FRONT LEG PIVOTED TO SAID FRONT BED SECTION, A BELL CRANKPIVOTED TO SAID REAR BED SECTION AND HAVING A DOWNWARDLY EXTENDING ARMAND A FORWARDLY EXTENDING ARM, AND A SECOND CONTROL LINK CONNECTING SAIDFORWARDLY EXTENDING ARM OF SAID BELL-CRANK WITH SAID THROW-OUT MEMBER,SAID BED BEING FULLY COLLAPSIBLE TO A POSITION IN WHICH THE REAR BEDSECTION IS DOWN, THE IN TERMEDIATE BED SECTION EXTENDS UP FROM THE FRONTEND OF SAID REAR SECTION, AND SAID FRONT SECTION IS LOCATED ABOVE THEREAR SECTION AND EXTENDS REARWARDLY FROM THE UPPER END OF SAIDINTERMEDIATE SECTION, AND SAID REAR THROW-OUT LINK EXTENDING DOWNWARDLYAND REARWARDLY FROM ITS PIVOTAL CONNECTION TO SAID CHASSIS, IN THECOLLAPSED CONDITION OF SAID BED.